import socket
import asyncio
import argparse
import os
import datetime


class RPSCPI:
    def __init__(self, rp_name, rp_host, ch1_gain, ch2_gain):
        self.name = rp_name
        self.host = rp_host
        self.ch1_gain = ch1_gain
        self.ch2_gain = ch2_gain

    def connect(self):
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.connect((self.host, 5000))
        self.sock_f = self.sock.makefile()

    def close(self):
        self.sock_f.close()
        self.sock.close()

    def sendmsg(self, msg):
        self.sock.send(msg.encode() + b"\r\n")

    def recvmsg(self):
        return self.sock_f.readline().strip()

    def trigger_prep(self):
        self.sendmsg("ACQ:RST")
        self.sendmsg("ACQ:SOUR1:GAIN {}".format(self.ch1_gain.upper()))
        self.sendmsg("ACQ:SOUR2:GAIN {}".format(self.ch2_gain.upper()))
        self.sendmsg("ACQ:START")

    async def trigger(self):
        self.sendmsg("ACQ:TRIG NOW")
        while True:
            self.sendmsg("ACQ:TRIG:STAT?")
            if self.recvmsg() == "TD":
                break

    def get_data(self, channel):
        self.sendmsg("ACQ:SOUR{}:DATA?".format(channel))
        return self.recvmsg()[1:-1]


RP_IP_ADDRS = {
    "creotech-1": "192.168.1.104",
    "creotech-2": "192.168.1.105",
    "mlabs-1": "rp-f05cc9",
    "mlabs-2": "rp-f0612e",
}


async def gather_trigger(rp_list):
    await asyncio.gather(*[rp.trigger() for rp in rp_list])


def main():
    # Get timestamp at script start
    now = datetime.datetime.now().replace(
        microsecond=0,  # get rid of microseconds when printed
    )
    now_iso = now.isoformat(sep=' ')

    parser = argparse.ArgumentParser(description="Data collection tool for Sayma DAC/TTL at RedPitaya")
    parser.add_argument("dir", help="output directory", type=str)
    parser.add_argument("rps_gains", metavar="RP_NAME:CH1_GAIN,CH2_GAIN",
        help="choose LV (+-1V) gain or HV (+-20V) gain on each channel for RP named <RP_NAME>; "
        "e.g. mlabs:LV,HV means LV for IN1 and HV for IN2 on RP mlabs;\n"
        "<RP_NAME> must be one of: " + " ".join(list(RP_IP_ADDRS.keys())),
        type=str, nargs='+')
    parser.add_argument("--txt", help="save data as additional human-readable text files",
        action="store_true")
    args = parser.parse_args()

    gains = dict()
    try:
        for gain in args.rps_gains:
            rp_name, ch1ch2_gains = gain.split(':')
            ch1_gain, ch2_gain = ch1ch2_gains.split(',')
            gains[rp_name] = ch1_gain, ch2_gain
            if rp_name == "" or ch1_gain == "" or ch2_gain == "":
                raise SyntaxError("Must specify IN1 and IN2 gains for each target RP.")
    except ValueError:
        raise SyntaxError("Must specify input gains in the format of: <RP_NAME>:<CH1_GAIN>,<CH2_GAIN>")

    # Connect a socket to each RP
    rps = []
    for rp_name in gains:
        rp = RPSCPI(rp_name, RP_IP_ADDRS[rp_name], *gains[rp_name])
        rp.connect()
        rps.append(rp)

    try:
        for rp in rps:
            rp.trigger_prep()

        asyncio.run(gather_trigger(rps))

        for rp in rps:
            y1_raw = rp.get_data(1)
            y2_raw = rp.get_data(2)
            print("Data collection started at {}.".format(now_iso))

            with open(os.path.join(args.dir, 'rp_{}_y1_raw.bin'.format(rp.name)), 'wb') as f:
                f.write("{}\n".format(now_iso).encode('utf-8'))
                f.write(y1_raw.encode('utf-8'))
                print("Succesfully written y1 raw data from RP {}.".format(rp.name))
            with open(os.path.join(args.dir, 'rp_{}_y2_raw.bin'.format(rp.name)), 'wb') as f:
                f.write("{}\n".format(now_iso).encode('utf-8'))
                f.write(y2_raw.encode('utf-8'))
                print("Succesfully written y2 raw data from RP {}.".format(rp.name))

            if args.txt:
                header = '''\
                    RedPitaya Oscilloscope Reading

                    RP Hostname:    {} ({})
                    RP Channel:     Input {} ({})
                    Date & Time:    {}
                    ------
                    '''
                y1 = [float(i) for i in y1_raw.split(',')]
                y2 = [float(i) for i in y2_raw.split(',')]
                with open(os.path.join(args.dir, 'rp_{}_y1_raw.txt'.format(rp.name)), 'w') as f:
                    f.write(''.join([l.lstrip(' ') for l in header.format(
                        RP_IP_ADDRS[rp.name], rp.name, 1, ch1_gain.upper(), now_iso).splitlines(True)]))
                    for i in y1:
                        f.write(str(i) + '\n')
                    print("Succesfully written y1 human-readable data from {}.".format(rp.name))
                with open(os.path.join(args.dir, 'rp_{}_y2_raw.txt'.format(rp.name)), 'w') as f:
                    f.write(''.join([l.lstrip(' ') for l in header.format(
                        RP_IP_ADDRS[rp.name], rp.name, 2, ch2_gain.upper(), now_iso).splitlines(True)]))
                    for i in y2:
                        f.write(str(i) + '\n')
                    print("Succesfully written y2 human-readable data from {}.".format(rp.name))

    finally:
        for rp in rps:
            rp.close()

if __name__ == "__main__":
    main()